So as an update I got the RG lock stop protectors. on the face of it quite a simple bit of kit but effective.
However, with my FGRT forks that have a swaged top so a more narrow diameter than the std one, the RG nylon bungs sit back from the fork 5mm at full lock, and the bottom bung sits on the taper change of diameter.
I quite like the simplicity of their design so Ive set about modifying it to suit my purpose. Ive added another mounting between the two bung so I can have them both sitting and touching the fork at full lock on the same diameter piece of fork, also turned two new bungs of nylon to extend to the 5mm and touch the fork at just before full lock on the lock stops..........
Simples.... engineering innit.